钢管拱桁架结构抗震特性的变参数分析  

Analysis of Variable Parameters on Seismic Resistance of Steel Pipe Truss Structure

作　　者：琚婷婷[1] 赵峰[1] 李茂新 万凯[3] 

机构地区：[1]武汉科技大学,武汉430070 [2]中冶南方技术有限公司,武汉430080 [3]中国建筑第八工程局有限公司广西分公司,南宁530000

出　　处：《建材世界》2014年第3期70-73,共4页The World of Building Materials

摘　　要：利用有限元分析方法对钢管拱桁架结构的抗震性能进行关键变参数的分析,主要变参数有结构矢跨比、榀间距、截面高跨比和宽高比。分析结果表明钢管拱桁架在榀间距、矢跨比、高跨比和宽高比的变化下呈现一定的变化规律,结构的高跨比对结构动力响应影响较明显,且分析得到在进行此类结构设计时,高跨比控制在1/25到1/10内;宽高比控制在1/3到1范围内;矢跨比控制在1/9以内;榀间距控制在9m以外,这四个参数在此范围内是比较合理的。The key variable parameters are structural rise-span ratio,hinged spacing,section depth-span ratio and section aspect ratio when analyzing the earthquake resistance of steel pipe truss structure with the finite element analyt-ical method.The conclusion is that the steel pipe truss structure has some regular dynamic changes interact with these variable parameters.The structural rise-span ratio significantly affects structural dynamic response.We get the con-clusion that when designing this type of structure,depth-span ratios should be controlled within 1/25 to 1/10,aspect ratio should be controlled within 1/3 to 1 ,rise-span ration should be controlled within 1/9 and hinged spacing should be controlled over 9 m.Parameter values within this range are accepted for the conceptual design of such construction.

关 键 词：钢管拱桁架 抗震性能 参数分析 变化规律 

分 类 号：TU392.3[建筑科学—结构工程] TU352.11